The Dow Jones industrial average edged up 13 points, or 0.1 per cent, to close at 17,279 Friday, the third straight day the blue-chip index closed at an all-time high. The Dow is up 1.7 per cent for the week.
The Standard & Poor's 500 index fell less than one point, or 0.1 per cent, to 2,010, but finished the week up 1.3 per cent.
The Nasdaq ended down 13 points, or 0.3 per cent, to 4,579.
Alibaba soared 38 per cent on its first day of trading. The Chinese e-commerce giant rose $25.89 to close at $93.89.